- Perfect Compatibility : Designed to be completely compatible with top filter models, including Hayward SwimClear C200S, Hayward CX200XRE, CS200E, Pleatco PA200S, and Unicel C-9442. All brand names and part numbers are referenced for easy identification. - Optimum Dimensions : Measures 28 3/16" in length, with an outer diameter of 10 1/8". Both the top and bottom openings are 4" wide. These precise dimensions ensure hassle-free installation in your filter system, eliminating concerns about leaks or fit. - Superior Filtration Performance : Constructed from ultra-fine, heavy-duty paper featuring increased pleat count, this filter enhances filtration efficiency, effectively capturing debris and maintaining a crystal-clear pool. - Durable Design : The spunbond polyester material and robust inner core are engineered to withstand high-pressure water flow. This durability makes it a reliable choice for long-term use, providing great value for your pool maintenance. - Practical Applications : Ideal for regular pool maintenance, ensuring water is clean and safe for family and friends. Recommended for use in residential pools, spas, or any setting where clear water is essential. Perfect for those who want to upgrade their filter system without hassle. This filter is the key to keeping your swimming pool in pristine condition, ensuring you enjoy a clean and inviting experience all season long.